diff --git a/Gemfile.lock b/Gemfile.lock
index a7e02f9..15cf011 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,7 @@ GEM
     mime-types (1.17.2)
     multi_json (1.0.4)
     nokogiri (1.5.0)
-    rack (1.4.1)
+    rack (1.6.11)
     rack-protection (1.2.0)
       rack
     rack-test (0.6.1)